Fungalpedia – Note 155, Appendicisporonites (Fossil Fungi)


Appendicisporonites R.K. Saxena & S. Khare 

Citation when using this data: Saxena RK & Hyde KD. 2024 (in prep) – Fungalpedia, Fossil Fungi. 

Index Fungorum, Facesoffungi, MycoBankGenBankFig. 1

Classification: Microthyriales, Ascomycota, Fossil Fungi.

The monotypic fossil genus Appendicisporonites was described from the Neyveli Formation (Eocene, 56–40 mya) of Jayamkondacholapurum Well-12, Tiruchirapalli District, Tamil Nadu, India (Saxena & Khare 1992). Appendicisporonites is characterized by subcircular, inaperturate, and multicellular fungal spores. Each cell possesses a long process, processes septate or nonseptate, with pointed or blunt tips, and wall psilate. According to Kalgutkar & Jansonius (2000), the illustrated specimen appears to be related to the setose pycnidia found in some Coelomycetes. Only one species listed in Index Fungorum (2023) under this genus.

Type species: Appendicisporonites typicus R.K. Saxena & S. Khare



Figure 1 – Appendicisporonites typicus. Scale bar = 50 μm. Redrawn from Saxena & Khare (1992).



Kalgutkar RM, Jansonius J. 2000 – Synopsis of fungal spores, mycelia and fructifications. AASP Contribution Series 39, 1–423

Saxena RK., Khare S. 1992 – Fungal remains from the Neyveli Formation of Tiruchirapalli District, Tamil Nadu, India. Geophytology 21, 37–43.


Entry by

Ramesh K. Saxena, Birbal Sahni Institute of Palaeosciences, Lucknow, India


(Edited by Kevin D. Hyde, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka)